Some people say that people don't like linking to PR 0 sites because they dont want their PR to go down since it drains their PR. But i don't think this theory is correct. Because that would mean forum sites always will have less PR than a normal content site, since forums have more out-links.

Can anyone verify?

Your PageRank will not drain as long as the website is SEO friendly and indexed by google.

Only reason I won't link to a PR0 website is if it's not indexed by google or it has bad SEO ethics.

With that said... if you have high PR you can be more selective with the links you choose to exchange. For example if you have a PR7 nobody is going to exchange w/ a PR0 when they can get a PR7, PR6, PR5, etc. in return.

PageRank doesn't;

leak, drain, bleed , dissipate, evaporate, leech or is otherwise reduced by out going links.

regardless of whether your site is SEO friendly or not.

Yeah, it had to be. Or Forum sites would never get much PR.
Good point bbott

It would defeat the point of PR.
PR is a judgment of how reliable your site is based on the rank and number of sites linking to you.
What would be the point of penalising sites for linking out?

I believe the amount of PR passed on has something to do with the amount of links on that page.
So if your sites has PR 6 and you have 1 outgoing link, that would be better for the site you are linking to than if you had 50 outgoing links.

Your PageRank will not drain as long as the website is SEO friendly and indexed by google.

PageRank doesn't;

leak, drain, bleed , dissipate, evaporate, leech or is otherwise reduced by out going links.

It would defeat the point of PR.
PR is a judgment of how reliable your site is based on the rank and number of sites linking to you.
What would be the point of penalising sites for linking out?

Hate to disagree with, well, Everyone. But I am pretty damm sure you are wrong.

PageRank has been around for a long time now and the basis of its calulation has been fairly well documented and admitted by google, for over at least a year now. I have seen no evidence to suggest the method of calculation has changed. The only thing that seems to have changed is the filter on what links pass PageRank.

The scoring system was designed at Leeds university to identify nodes in databases that were most regularly used (if I remember correctly). The basic principle is that all pages in the index are assigned a value of 1, on first calculation they take 85% of the value of each page and add it evenly between all the pages that it links to. So if you had two pages that just link to each other they would they would both end up with a value of 1.85 each, then this calculation is repeated multiple times. So if 100 pages all link to 'page A' and that 'page A' links to 'page B' on the first calculation 'page A' will end up with 86 and 'page B' with have 1.85, but after the second calculation 'page A' with have 171 and 'page B' will have been given a boast from 'page A's' new large PR, giving it now a value of 74.95. This calculation is then repeated multiple times.

This is all explained in far greater detail here: Page rank explained.

The point is, if you add a link from a high PR site to a low PR site the value of your site's pages will become lower - effectively draining PageRank. Now it's very hard to see because PageRank is updated so rarely, and there are so many other pages in the equation that it's not easy to tell what has made the effect. Plus we're only shown a small green bar which merely tells you roughly what range your PageRank falls into.

For example, look at this PageRank calculation with no outgoing links. HERE
The total pagerank of the site is: 6.600009

Now here is the exact same site structure plus one outgoing link. HERE
The total page rank is: 4.7308901

Because that would mean forum sites always will have less PR than a normal content site, since forums have more out-links

Forums have good PR for a number of reason; they do have a lot of outgoing links but they also have a ****load of internal links and they have a ****load of pages indexed, and since a begining value is assigned to each page, this can make a big difference.

Take, for example, this forum as it has 132,000 indexed pages all of which link to the homepage giving it a PR of 6. That makes perfect sense.

Originally Posted by nixies78@yahoo.

Hate to disagree with, well, Everyone. But I am pretty damm sure you are wrong.

PageRank has been around for a long time now and the basis of its calulation has been fairly well documented and admitted by google, for over at least a year now. I have seen no evidence to suggest the method of calculation has changed. The only thing that seems to have changed is the filter on what links pass PageRank.

The scoring system was designed at Leeds university to identify nodes in databases that were most regularly used (if I remember correctly). The basic principle is that all pages in the index are assigned a value of 1, on first calculation they take 85% of the value of each page and add it evenly between all the pages that it links to. So if you had two pages that just link to each other they would they would both end up with a value of 1.85 each, then this calculation is repeated multiple times. So if 100 pages all link to 'page A' and that 'page A' links to 'page B' on the first calculation 'page A' will end up with 86 and 'page B' with have 1.85, but after the second calculation 'page A' with have 171 and 'page B' will have been given a boast from 'page A's' new large PR, giving it now a value of 74.95. This calculation is then repeated multiple times.

This is all explained in far greater detail here: Page rank explained.

The point is, if you add a link from a high PR site to a low PR site the value of your site's pages will become lower - effectively draining PageRank. Now it's very hard to see because PageRank is updated so rarely, and there are so many other pages in the equation that it's not easy to tell what has made the effect. Plus we're only shown a small green bar which merely tells you roughly what range your PageRank falls into.

For example, look at this PageRank calculation with no outgoing links. HERE
The total pagerank of the site is: 6.600009

Now here is the exact same site structure plus one outgoing link. HERE
The total page rank is: 4.7308901



Forums have good PR for a number of reason; they do have a lot of outgoing links but they also have a ****load of internal links and they have a ****load of pages indexed, and since a begining value is assigned to each page, this can make a big difference.

Take, for example, this forum as it has 132,000 indexed pages all of which link to the homepage giving it a PR of 6. That makes perfect sense.

Having two pages with the same page structure has nothing to do with PageRank... it all depends on how many incoming links that page has - that is all.

The only downside of putting a lot of outgoing links on your webpage is that it will drain your "Passable Page Rank Power" because it's splitting up with so many sites. For example, if you had two exact sites w/ the same exact incoming links, if one of these sites had 20 outgoing links and one had only 1 outgoing link. More pagerank would be passed onto the 1 link tahn would be to the 20 sites.

This is why I stay away from sites who have too many outgoing links on their page. There is no point in exchanging links w/ them for PR purposes.... If you ever buy link make sure they have a MAXIMUM of 10 outgoing links otherwise don't waste your money.

Originally Posted by nixies78@yahoo.

The scoring system was designed at Leeds university...

I think Sergey Brin and Larry Page might disagree.

Ok, i dont get the PR calculator couldnt figure it out.
But according to you guys you're saying that:
if there was a link directory
with lets say 1000 OUTgoing links.
if i add my sites like to it it becomes: 1001... And you're saying that the link directories PR will not go down, but the effect of me getting higher PR is less than that of a directory with 100 outgoing links.

So it never drains the PR of the website having the links, it only drains the amount of PR the outgoing linked websites will get from your websites PR.

But now that i think about it... look at it this way then. What if everyone just linked each other... then it would just be harder to get PR, or everyone would have a high PR at first.

Well done nixies78@yahoo, it's a while since I read so much incorrect information in one place.

to execute; Both points are correct

look at it this way then. What if everyone just linked each other... then it would just be harder to get PR, or everyone would have a high PR at first

Hypothetically, if every page was cross-linked to every page this would create a closed feedback loop and the value of every page would be unity.
This means that whatever value was initially in the system would be shared equally by all nodes. However because of the dampening factor this cannot occur with the PR system.

Well done nixies78@yahoo, it's a while since I read so much incorrect information in one place.

to execute; Both points are correct

Okay to start with chrishirst, please don't just say: "it's a while since I read so much incorrect information in one place", because I disagree with you, then give no points. I have cited references where I can find them and I have tried my best to describe my points. Don't just stick your fingers in your ears and go "I'm right, your wrong, la la la". If I am wrong please explain, (evidence and sources are greatly appericated). I will admit if I have got it wrong.

Hypothetically, if every page was cross-linked to every page this would create a closed feedback loop and the value of every page would be unity.
This means that whatever value was initially in the system would be shared equally by all nodes. However because of the dampening factor this cannot occur with the PR system.

Yes this would create a feedback loop, but that is not a problem, since the loop has a set amount of Iterations this is fine.

The point if all pages would link to each other in a system is also fine, their are very few site that do that. I don't think I have ever seen any exspecaily because google find site though inbound links so a closed system would not be indexed.

What do you mean by because of the damping factor? I can't make any sense of that sentence.

I don't understand any of the point you are making here and can't understand how they discredit my pervious suggestions.

Having two pages with the same page structure has nothing to do with PageRank... it all depends on how many incoming links that page has - that is all.

Bbott, You are missing the point here, it is not about the structure of the actual page, it is about site structure how the pages of the site interconnect. This does have a effect.

So it never drains the PR of the website having the links, it only drains the amount of PR the outgoing linked websites will get from your websites PR.

No if a directory add a link to your website they are giving you a little of their page rank. Yes it does drain the Page rank of the directory and slightly increase yours. This is why directories and website use javascript and redirects to pervent the pagerank getting drained from their site.

Originally Posted by nixies78@yahoo.

Yes it does drain the Page rank of the directory...

Pagerank is an evaluation of the 'importance' of a web page, using the number and value of incoming links. The equation for calculating pagerank for a particular web page uses only inbound links. Outbound links from this page are disregarded when calculating its pagerank, so there will be no 'leakage' of pagerank.

Search for Sergey Brin and Lawrence Page to get the definitive equation. They developed the pagerank concept at Stanford University I believe.

Pagerank is an evaluation of the 'importance' of a web page, using the number and value of incoming links. The equation for calculating pagerank for a particular web page uses only inbound links. Outbound links from this page are disregarded when calculating its pagerank, so there will be no 'leakage' of pagerank.

Search for Sergey Brin and Lawrence Page to get the definitive equation. They developed the pagerank concept at Stanford University I believe.

I agree. Could well be stanford University, I was a long time ago I was told about this and I can't find any resources on that.

Can I define what I mean by 'drain'. Page rank is calulated as you we have been saying here but do a calulation by assigning a value then adding a percentage of the evenly between the pages it links to. This calulation is done a number of times to generate a PR rank value which is then displayed via the little green bar, depending on which grouping the value fall into 0-10.

Now if you add a extra link from your site out to another and everything else stays the same. The next time the calulation is done, you will have a low value than you did the pervious time. That is for all intensive purpose appear to be a 'drained' even though their has never been a minus in the equation at all.

It is only dependant on inbound links. However since the inbound links determine the value that inbound links may give you in the future interation of the calulation, i.e. if you give Page rank to a page which gives you page rank back you will get back more page rank than if you give to a page which does not link back to you.

Originally Posted by nixies78@yahoo.

Now if you add a extra link from your site out to another and everything else stays the same. The next time the calulation is done, you will have a low value than you did the pervious time.

I'm not sure why you think this. If everything else stays the same, each of the sites you link to will experience a dilution of the pagerank that they originally received from you. I'm not sure why you think your PR will go down, though.